We offer a 30-day, money back guarantee for our products for any reason. This comprehensive return policy gives our customers the opportunity to try teeth whitening products risk free for 30 days so that we can assure complete customer satisfaction guarantee. The effectiveness of dental bleaching products can always be determined by each customer within 30 days of purchase. Please read and understand return policy for Prima White Teeth Whitening products before using them. Please follow the below guidelines for product returns.